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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 34, Iss. 24 — Dec. 15, 2009
  • pp: 3815–3817

Onset of the optical damage in Ca F 2 optics caused by deep-UV lasers

Michael Bauer, Martin Bischoff, Thomas Hülsenbusch, Ansgar Matern, Robert W. Stark, and Norbert Kaiser  »View Author Affiliations


Optics Letters, Vol. 34, Issue 24, pp. 3815-3817 (2009)
http://dx.doi.org/10.1364/OL.34.003815


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Abstract

The exterior sides of calcium fluoride ( Ca F 2 ) outcoupling mirrors are damaged by ArF laser light irradiation with high pulse-energy densities ( 80 mJ cm 2 ) . The damage is generated by a partial alteration of the Ca F 2 substrate to calcite. The Ca F 2 decomposition is driven by photochemical processes due to the UV light and the presence of water vapor and is supported by elevated temperatures within the laser beam transmitting area. Small filaments act as starting points for the decomposition process, where kerogenous carbon and calcite can occur.

© 2009 Optical Society of America

OCIS Codes
(140.2180) Lasers and laser optics : Excimer lasers
(140.3330) Lasers and laser optics : Laser damage
(230.4040) Optical devices : Mirrors
(260.7200) Physical optics : Ultraviolet, extreme

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: August 31, 2009
Manuscript Accepted: October 30, 2009
Published: December 7, 2009

Citation
Michael Bauer, Martin Bischoff, Thomas Hülsenbusch, Ansgar Matern, Robert W. Stark, and Norbert Kaiser, "Onset of the optical damage in CaF2 optics caused by deep-UV lasers," Opt. Lett. 34, 3815-3817 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-24-3815

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